tra·pe·zi·um (tr -p  z-m)n. pl. tra·pe·zi·ums or tra·pe·zi·a (-z -) 1. A quadrilateral having no parallel sides. 2. Chiefly British A trapezoid. 3. A bone in the wrist at the base of the thumb. [Late Latin trapezium, trapezoid, from Greek trapezion, diminutive of trapeza, table : tra-, four; see kwetwer- in Indo-European roots + peza, foot; see ped- in Indo-European roots.] |
trapezium [trəˈpiːzɪəm]
n pl -ziums, -zia [-zɪə]
1. (Mathematics) Chiefly Brit a quadrilateral having two parallel sides of unequal length Usual US and Canadian name trapezoid
2. (Mathematics) Now chiefly US and Canadian a quadrilateral having neither pair of sides parallel
3. (Life Sciences & Allied Applications / Anatomy) a small bone of the wrist near the base of the thumb
[via Late Latin from Greek trapezion, from trapeza table]
trapezial adj
| trapezium (tr-pz-m) Plural trapeziums or trapezia A four-sided plane figure having no parallel sides. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  trapezium - a quadrilateral with no parallel sidesU.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776 parallelogram - a quadrilateral whose opposite sides are both parallel and equal in length |
| 2. |  Trapezium - a multiple star in the constellation of Orionmultiple star - a system of three or more stars associated by gravity | |
| 3. |  trapezium - the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals |
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